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Homogenized feeding of pulverized fuel with a controllable restriction in the pulverized fuel feed line

A technology of conveying pipes and throttling devices, which is applied in the direction of supply configuration, production of combustible gas, granular/powdered fuel gasification, etc., and can solve problems such as auxiliary gas input

Inactive Publication Date: 2012-12-26
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technique is proven, but has the disadvantage that a large amount of auxiliary gas is input into the delivery gas

Method used

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  • Homogenized feeding of pulverized fuel with a controllable restriction in the pulverized fuel feed line
  • Homogenized feeding of pulverized fuel with a controllable restriction in the pulverized fuel feed line

Examples

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Embodiment Construction

[0031] Example 1:

[0032] according to figure 1 The entrained flow gasification reactor 2 operates at 500 MW at a pressure of 4 MPa (40 bar). For this purpose, bituminous coal powder processed to a particle size 3 very dense fluidized bed. By providing a pressure difference between the metering vessel 1 and the gasification reactor 2, the combustion dust-conveying gas-suspension produced in the fluidized bed flows into the gasification reactor 2 via the conveying line 3.2. according to figure 1 , in this example three delivery pipes 3.2 are operated, each with a delivery power of 30 Mg / h, which feed into the three burners 2.1 of the gasification reactor 2 . In order to suppress fluctuations in the pressure difference between the metering container 1 and the gasification reactor and thus to keep the delivery rate constant in the dust delivery line 3.2, a fixed throttle 3.6 is arranged in the delivery line. Venturi tubes, partitions, tube reducers and permanently installed ...

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PUM

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Abstract

An apparatus for constantly supplying pulverized fuel at ambient or increased pressure includes a restrictable pulverized fuel control valve in the pulverized fuel feed line connecting the swirl layer of a dispensing vessel with a pulverized fuel collector is provided. This pulverized fuel control valve effects a compensation for and also attenuation of the pressure fluctuations, as occur in the pulverized fuel feed line, particularly during refill processes of the dispensing vessel. Special embodiments relate to a further homogenization by a fixed throttle facility and also auxiliary gas feeds into the pulverized fuel feed line.

Description

technical field [0001] The invention relates to a device for constantly feeding dust into a dust receiver under ambient pressure or elevated pressure and for compensating and suppressing pressure fluctuations in a dust conveying line. [0002] The invention relates to a method and a device for the controlled feeding of pneumatically conveyed dust into a consumer, in particular of pulverized fuel, into a pressure gasification reactor. Background technique [0003] Pneumatically conveyed dust is understood to mean finely ground coal of various degrees of coalification, coke, optionally preheated biomass or comminuted residues and wastes from industry, commerce and households. In addition, inorganic dusts, such as are used for refining pig iron and for desulphurization, are among the possible conveyors. [0004] Pneumatic conveying of dusty fuel is known in dust pressure gasification for the production of energetic gas and synthesis gas or when feeding combustion dust into the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/56C10J3/54
CPCF23K3/02C10J3/50C10J3/30F23K2203/104F23K2203/006C10J3/506C10J3/723C10J3/78C10J2300/0933C10J2300/0969
Inventor F.弗里施F.汉内曼T.梅茨M.申格尼茨
Owner SIEMENS AG